American Express interview questions
Online test → Technical → Managerial
CS fundamentals
Showing 37 of 225 reported in this area
Explain ACID properties in DBMS.
What are the differences between C and C++?
What is abstraction in Object-Oriented Programming?
What is the difference between SQL and NoSQL databases?
What is inheritance and what are the types of inheritance?
What is the difference between function overloading and function overriding?
Explain different types of RAID.
Explain how HTTP and HTTPS work.
Explain the locking system in DBMS.
Explain JWT authentication in detail.
How is KNN used in sentiment analysis?
What is swapping in operating systems?
Explain 1NF, 2NF, and 3NF with examples.
What are SSH keys and how are they used?
Given an SQL query, determine the output.
Explain the lifecycle of a thread in Java.
How are NPM packages versioned and managed?
Predict the output of tricky Java programs.
Explain ACID properties and the CAP theorem.
Explain the workflow of a credit card system
Explain the types of trees in data structures.
What are the steps to connect MySQL with Java?
What is JWT and how is it used with REST APIs?
Explain the singleton design pattern with code.
How can deadlocks be managed or avoided in Java?
How are multithreading and CPU scheduling related?
How does authentication work in a web application?
What are the different types of memory in a browser?
Write SQL queries to retrieve data from given tables
Explain OAuth and how you implemented it in a project.
What do you know about DevOps, Docker, and Kubernetes?
Explain the flow of a website from frontend to backend.
Explain how CPU scheduling works in an operating system.
Explain how to manage and update versions of npm packages.
Write a MySQL query to create a table and add constraints.
Explain cookies and how servers use them to manage sessions
Compare SQL and NoSQL databases and explain when to use each.
DSA
Showing 9 of 109 reported in this area
Given maximum occurrences of 'a', 'b', and 'c', construct the longest possible string such that no three consecutive characters are the same.
Find the Lowest Common Ancestor (LCA) of two nodes in a Binary Tree
Detect a cycle in a Directed Graph
Find the Kth largest element in an array.
Find the pivot element in a rotated sorted array.
Count the number of subarrays with sum equal to zero.
Check whether a given point lies inside a triangle or not.
Explain the Trie data structure and its common operations.
What are common applications of graphs in computer science?
Puzzles
Showing 5 of 35 reported in this area
Estimate how many marriages happen in Delhi in a year.
How can you cut a cake three times to get 8 equal pieces?
How can you measure 45 minutes using two identical wires?
Solve guesstimate problems by choosing correct parameters
Estimate how many people in Delhi drive their car themselves.
Aptitude
Showing 3 of 16 reported in this area
There are two girls; given that one of them is a girl, what is the probability that both of them are girls?
Given a series of prime numbers, find the next number in the series.
Find the count of 3-digit numbers that are multiples of both 3 and 4.
Behavioural
Showing 3 of 16 reported in this area
How do you react when disputes happen in a team?
Describe a decision in your life that you later regretted.
Discuss and analyze a given case study during company presentation
System design
Showing 3 of 9 reported in this area
Design a database schema for a school management system
How would you handle simultaneous orders of the same product in a system?
How would you optimize your code to handle multiple simultaneous requests?
Showing 60 of 319 questions. Ranked by how often the same question came back across reports.
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What questions does American Express ask?
Candidate interview reports most often cover CS fundamentals (55%) and DSA (27%).
How many rounds does American Express interview have?
Candidate interview reports show an average of 3.4 rounds per experience, with a typical sequence of Online test → Technical → Managerial. Individual interview paths can vary.
Is the American Express interview hard?
Among questions with a reported difficulty, the mix is easy 53%, medium 45%, hard 2%.